B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12 buy - large image1

B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12 buy - image1

B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12 buy - image2

B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12 buy - image3

B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12 buy - image4

B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12

TDS 2 Inquiries

Unit Price:

$30-35/UNIT FOB

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CAS No.:

13408-78-1

Grade:

High Purity Grade

Content:

99%

Port:

Shenzhen

Brand:

Tong Peptides

Packaging:

10mg/vial, 10 vials/box

Sample Available:

Yes

Price valid (until):

2027-05-14

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Tong peptides

Company Type:

Manufactory

Location:

China

Payment Terms:

TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Qualification:

Main Products:

retatrutide,TB-500,GHK-CU,peptide

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Product Details
Seller Information
Inquiry History

Description

Product Detail

Name:Chloe

Whatsapp:+852 6572 8571

Email Address:chloe@tongpeptides.com

What is B12 ?

B12 is catalog designation for Methylcobalamin, 10 mg per vial. Methylcobalamin is the biologically active coenzyme form of vitamin B12, not a synthetic peptide. Manufactured under laboratory purification process, supplied as red‑pink lyophilized powder with tested purity ≥98%.

In laboratory studies, B12 is applied for in‑vitro and pre‑clinical experiments including one‑carbon metabolic pathway, methylation reaction mechanism, nerve‑cell biological assay, homocysteine metabolism and related biochemical‑model research. This item is lab‑grade research raw material only for biochemistry and molecular‑cell research projects.

Store unopened lyophilized powder at ‑20℃, keep dry and away from light. Reconstitute with 0.9% BAC bacteriostatic water. After reconstitution, store at 2‑8℃ refrigeration, and avoid strong light exposure. Gently swirl the vial to dissolve powder, do not shake violently. Avoid repeated freeze‑thaw cycles, aliquot is recommended for dissolved solution.

Why choose us?
1.High quality products with competitive pricing.
2.Free samples available for your evaluation and testing.
3.Fast, reliable delivery via reputable shipping lines.
4.Trial orders are welcome for quality verification after sample approval.
5.Proactive updates and full transparency at every stage of your order.
6.Custom packaging solutions tailored to meet your specific requirements.

Item	Details
Product Name	B12
Appearance	White Lyophilized Powder
Purity	≥99%
CAS No.	13408-78-1
Specification	10mg per vial
Storage (Unopened)	-20℃, Keep dry and away from light
Storage (After reconstitution)	2-8℃ refrigerated, use within 7-12 days
Solvent for reconstitution	BAC water (Benzyl Alcohol 0.9%)
Shelf life	24 months under proper storage

Application

GHK-Cu is widely used in academic laboratory research, including cell activity research, fibroblast related experiments, oxidative stress mechanism, inflammatory response study, tissue repair mechanism and pre-clinical biological model research.

FAQ

Q1: Can you provide COA for B12?

A: Yes, official batch COA test report can be provided.

Q2: What solvent is suitable for reconstitution?

A: We recommend 0.9% BAC bacteriostatic water for best solubility and activity retention.

Q3: How long can reconstituted B12 be stored?

A: 2-8℃ refrigerated storage, valid for 7-10 days after dissolving.

About Us

Tong Peptides is positioned as a document-first lyophilized powder supply support brand. We help customers request product information, batch-related documents, shipping options, and private communication through a structured inquiry process. Our focus is not aggressive claims.

Our focus is clear product presentation, document support, discreet handling, and practical communication for global customers.

Delivery&Shipment

Items

Specifications

Name

B12

CAS

13408-78-1

Purity

Appearance

Heavy Metals

Residual TFA

Available Specification

99%

White lyophilized powder

＜10 ppm

≤0.5%

10mg per vial

ECHEMI Editorial Reference

Cob(II)alamin is a cobalamin in which the central cobalt atom has an oxidation state of +2. It has a role as a human metabolite and a cofactor.

Research & Reference Note

B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12 is listed on ECHEMI for industrial / laboratory sourcing. This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.

Authoritative sources

Disclaimer: This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.

Reviewed by ECHEMI Scientific Review - Platform editorial review for research chemicals

Certificates

Basic Info

Product Name:

Cobalamin

Other Name:

Cobinamide,dihydrogen phosphate (ester),inner salt,3′-ester with (5,6-dimethyl-1-α-D-ribofuranosyl-1H-benzimidazole-κN3),ion(1+);Cobinamide,hydroxide,ion(1+),dihydrogen phosphate (ester),inner salt,3′-ester with 5,6-dimethyl-1-α-D-ribofuranosylbenzimidazole;Cobinamide,hydroxide,ion(1+),dihydrogen phosphate (ester),inner salt,3′-ester with 5,6-dimethyl-1-α-D-ribofuranosyl-1H-benzimidazole;Cobinamide,ion(1+),dihydrogen phosphate (ester),inner salt,3′-ester with 5,6-dimethyl-1-α-D-ribofuranosyl-1H-benzimidazole;Cobalamine;Cobalamin;58846-82-5

CAS No.:

13408-78-1

Molecular Formula:

C62H88CoN13O14P

InChIKeys:

InChIKey=NSLAUEAQDBERRV-UHFFFAOYSA-L

Molecular Weight:

1355.37000

Exact Mass:

1354.57000

EC Number:

236-500-2

HScode:

2936260000

Categories:

Polypeptide

Characteristics

PSA:

487.66000

XLogP3:

6.63228

Storage Conditions:

2-8ºC

See More Cobalamin Properties 

Hazard Identification

Classification of the substance or mixture

no data available

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	no data available
Signal word	no data available
Hazard statement(s)	no data available
Prevention	no data available
Response	no data available
Storage	no data available
Disposal	no data available

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Cobalamin Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
retatrutide,TB-500,GHK-CU,peptide

Location:
1-1, Kailuo Road, Taojia Town, Jiulongpo District, Chongqing

Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Total Annual Revenue:
$10 million-$25 million

Total Employees:
501-1000

Year of Establishment:
2023

Pharma Grade Peptides is your premium source for high-quality purified research peptides.

We have served over 20,000 customers on Alibaba and now offer the same quality at our independent store.

Over the course of many years, we have empowered researchers and scientists to
explore new avenues of scientific discovery.

Inquiry History

2 Inquiries

Country	Product	Purchase Quantity	Date Posted
France	Cobalamin	2 MT	Oct 14, 2026
United States	B12 Methylcobalamin Tested - No Chinese Writing on Vials	100 MT	May 13, 2024

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B12 | China Warehouse | 99% Purity | 10 mg vial | Lyophilized Powder | B12

Product Details

Seller Information

Inquiry History

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

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